分子蒸馏纯化亚麻籽油中α-亚麻酸的研究  

Purification of α-linolenic acid by molecular distillation from Linseed oil

作　　者：陈乐清[1] 林文[1] 丁朝中[1] 王志祥[1] 

机构地区：[1]中国药科大学制药工程教研室,江苏南京210009

出　　处：《食品工业科技》2013年第4期216-219,共4页Science and Technology of Food Industry

摘　　要：亚麻籽油经甲酯化后,采用分子蒸馏法对其中α-亚麻酸进行分离纯化,用α-亚麻酸的质量分数、提取率作为衡量纯化效果的指标。经单因素实验确定蒸馏温度、刮膜转速、预热温度和进料速度的操作范围,并利用响应曲面法的Box-Behnken实验设计,得到提纯α-亚麻酸的优化工艺条件:蒸馏温度91℃、刮膜转速250r/min、预热温度60℃、进料速度57mL/h,在此工艺条件下,α-亚麻酸质量分数从53.36%提高至80.27%,提取率为76.20%。After methyl etherification of Linseed oil,a-linolenic acid could be separated and purified by molecular distillation,with the α-Iinolenic mass fraction and extraction rate as a measure indicator. The single factor experiments obtained the operating specification of distillation temperature,agitating speed,preheat temperature and feeding rate. Box-Behnken design optimization experiments were studied. The optimal conditions for purification were as follows ：distillation temperature of 91℃,agitating speed of 250r/min, preheat temperature of 60℃,feeding rate of 57mL/h. Under these optimal conditions,the content of α-linolenic acid was up to 80.27% from 53.36% ,and the recover rate was 76.20%.

关 键 词：亚麻籽油 Α-亚麻酸 分子蒸馏 纯化 

分 类 号：TS221[轻工技术与工程—粮食、油脂及植物蛋白工程]